Inventor

MELLGREN CAROL S

US104 patents

⚠️ This page may combine multiple inventors who share the name “MELLGREN CAROL S”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

MELLGREN CAROL S

IBM

Using a forward log storage and backward log storage to recover a storage to a forward or backward point-in-time

System availability in PPRC failover environments

Bitmap selection for remote copying of updates

Device reservation state preservation in data mirroring

Offloading processing of writes to determine malicious data from a first storage system to a second storage system

Assigning device adaptors to use to copy source extents to target extents in a copy relationship

Managing updates and copying data in a point-in-time copy relationship expressed as source logical addresses and target logical addresses

Processing a copy command directed to a first storage architecture for data that is stored in a second storage architecture

Processing a copy command directed to a first storage architecture for data that is stored in a second storage architecture

Source-target relations mapping

Asynchronous pausing of the formation of consistency groups

Management of point-in-time copy relationship for extent space efficient volumes

After swapping from a first storage to a second storage, mirroring data from the second storage to the first storage for data in the first storage that experienced data errors

Using a forward log storage and backward log storage to recover a storage to a forward or backward point-in-time

Performing a recovery copy command to create a recovery volume for a consistency group

Automatic data healing using a storage controller

Performance efficient time locks on data in a storage controller

Processing a space release command to free release space in a consistency group

Device reservation state synchronization in data mirroring

Point in time copy of time locked data in a storage controller

Copying data from multiple point-in-time copies to a log storage to use to roll-back a source storage

Determining whether to destage write data in cache to storage based on whether the write data has malicious data

Asynchronous local and remote generation of consistent point-in-time snap copies in consistency groups

Data recovery in multi-target data storage networks

Using a cascade flag to process a copy relationship having a backward cascade copy relationship

Bitmap selection for remote copying of updates

Establishing a point-in-time copy relationship between source logical addresses and target logical addresses

Exchanging locations of an out of synchronization indicator and a change recording indicator via pointers

Enhanced soft fence of devices

Switching between mirrored volumes

Point in time copy of time locked data in a storage controller

Performance efficient time locks on data in a storage controller

Copying data from multiple point-in-time copies to a log storage to use to roll-back a source storage

Determining whether to destage write data in cache to storage based on whether the write data has malicious data

Offloading processing of writes to determine malicious data from a first storage system to a second storage system

Using a space release data structure to indicate tracks to release for a space release command to release space of tracks

Processing a space release command to free release space in a consistency group

Asynchronous pausing of the formation of consistency groups

Storage in tiered environment for colder data segments

Data loss recovery in a secondary storage controller from a primary storage controller

Data loss recovery in a secondary storage controller from a primary storage controller

Management of data written via a bus interface to a storage controller during consistent copying of data

Automatic data healing by I/O

Performing a recovery copy command to restore a safeguarded copy backup to a production volume

BENHASE MICHAEL T

Efficient discard scans

Assigning device adaptors and background tasks to use to copy source extents to target extents in a copy relationship

Storage in tiered environment for colder data segments

Source-target relations mapping

Cascaded, point-in-time-copy architecture with data deduplication

Multiple incremental virtual copies